MBTI is useful. It's a shortcut to seeing your own blind spots and typing people will likely improve the quality of your interactions (it has for me). I married the exact opposite of my personality and raise two kids that mirror us. I also type people when I first meet them. Some learnings:

  1. Seeing MBTI as limiting is itself a limitation. People bring value in different ways and knowing where to look for it can be life changing.
  2. Personality is genetic but can vary wildly. MBTI is best seen as a genotype (markers for traits, rather than the expression of traits). Some of its categories aren't very helpful while others can help guide a career.
  3. MBTI is more of an ongoing study rather than a test you take. Once developed, it provides a helpful guide to communicating, understanding expectations and compatibility with others. It’s also a helpful mirror to see your own blind spots.
  4. Mature individuals can be difficult to type as they present as they choose rather than their defaults.